This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 4 |
| 4 | 43 |
| 5 | 47 |
| 6 | 137 |
| 7 | 184 |
| 8 | 1977 |
| 9 | 2161 |
| 10 | 6299 |
| 11 | 8460 |
| 12 | 90899 |
| 13 | 99359 |
| 14 | 289617 |
| 15 | 388976 |
| 16 | 4179377 |
| 17 | 4568353 |
| 18 | 13316083 |
| 19 | 17884436 |
| 20 | 192160443 |
| 21 | 210044879 |
| 22 | 612250201 |
| 23 | 822295080 |
| 24 | 8835201001 |
| 25 | 9657496081 |
| 26 | 28150193163 |